Which one is not a restriction enzyme?

Agarose,extracted from seaweeds,is used in:

Do eukaryotic cells have restriction endonucleases? Justify your answer.

Which of the following statements are not true regarding restriction endonucleases?
$A$. They are called molecular scissors.
$B$. These are the enzymes responsible for restricting the growth of bacteriophages in $E. coli$.
$C$. They cut the $DNA$ only at the centre of the palindromic sites.
$D$. They remove nucleotides only from the ends of $DNA$ fragments.
$E$. They recognise specific palindromic base-pair sequences.
Choose the answer from the options given below:

Recombinant $DNA$ is achieved by cleaving the pro-$DNA$ by

What is a plasmid?